Embroidering-machine



' Patented Aug. 9, 1898. v R. LOEB. EMBROIDEBING MACHINE.

(Applic ation filed Aug. 26, 1897.)

2 Sheds-Sheet I..

(No Model.)

WI FTEE 07/ 05264 firm a Ayn/M W/f Patented Aug. 9, I898.

R. LOEB.

EMBROIDERING MACHINE.

(Application filed Aug 26, 1897.)

2 SheefsSheet 2 (No Model.)

INVENTUH I was 00.. moTo-u'ma. WAsnlNGTO\ D c FFlQEi.

RUDOLF LOEB, OF CAMDEN, NEXV JERSEY.

EMBROlDERlNG-MACHINE.

SPECIFICATION forming part of Letters .Patent N 0. 608,781, dated August9, 1898.

Application filed August 26, 1897. Serial No. 649,583. (No model.)

To all whom it may concern:

Be it known that I, RUDOLF LOEB, a citizen of Germany, residing atCamden, in the county of Camden and State of New Jersey, have invented anew and useful Improvement in Embroidering-Machines, of which thefollowing is a specification.

My invention consists in holding and securing the thread of anembroidering-machine from running back into its thread-shaft beyond thereach of the embroidering-needle when the machine is stopped and thethread broken for changing the embroidering to another part of theembroidering-cloth. After the machine is stopped a thread fastener holdsimmovably the embroidering-thread in front of the thread-cylinder andthe needle is rotated independently by the machine operator until theembroidering-thread is broken and the embroidering-cloth moved for em--broidering at another part of it. The reciprocating or embroiderin gmotion of the embroidering needle or needles (but one being shown in thedrawings) is as usual in this class of machines, and the additionalrotary motion of said needles for breaking the thread is accomplished,preferably, by a longitudinal shaft having a screw formed thereon, inconnection with a needle screw-shaft meshing with it. The operator byturning a handle of the longitudinal shaft imparts a rapid rotation tothe needle-shaft and needle, and thus breaks off the thread held by thethread-holder. I do not confine myself to the exact mechanism foraccomplishing the object described, for I have hereinafter shown anddescribed that it can be done in more than one way.

On reference to the accompanying sheets of drawings, making part of thisspecification, Figure 1 is a front elevation of an embroidering-machineembodying my invention, the bed-plate being in dotted lines. Fig. 2 is aplan view of Fig. 1, showing mechanism for rotating the needle andtwisting and severing the embroidering-thread, 'the driving-shaft beingomitted. Fig. 3 is the same view as Fig. 1,with the exception that thereciprocating bar is depressed by its cam and moved longitudinally todepress and place the thread hook or holder on the opposite side of thethread-cylinder. Fig. 4 is a detached side elevation of thereciprocating bar, guides, thread hook or holder, and lifting-spring forsaid reciprocating bar. Fig. 5 is a side elevation of thereciprocating-bar guide, reciprocating bar, and an end view of thedepressing-cam. Fig. 6 is an enlarged detached side elevation of thereciprocatin g or thread-holder bar. Fig. 7 is a top edge View of Fig.6, showing the cam-notches. Fig. 8 is a longitudinal surface View of thetransverse thread-shaft which is located in the transversethread-cylinder and engages with and receives its motion from the screwof the actuating-shaft. Fig. 9 is a View like Fig. l, with the exceptionthat the thread hook or holder has no vertical movement and it islocated in a slot behind the stitch-plate. Fig. 10 is a transversesection of Fig. 9, including the stitch-plate. Fig. 11 is a transversesection of Fig. 9 through the fabric, stitch-plate, and reciprocatingbar, showing the thread hook or holder, needle, thread-cylinder, andthread. Fig. 12 is a plan view of Fig. 9; and Fig. 13 is an enlargedsection of the fabric and thread, the latter being formed into achain-stitch for embroidering on the cloth.

Similar letters refer to similar parts in the several views.

A, dottedlines, Figs. 1, 2, and 3, is the bedplate of anembroidering-machine. B is a pedestal of said bed-plate, on which ismounted a longitudinal guide-cylinder 0, having beneath it acommunicating transverse attachment or thread-cylinder D. E is adriving-shaft which passes through and is guided by the pedestals B andguide-cylinders C, but one of each being shown, and is provided with ascrew a, in engagement with a screw Z) of a transverse thread-shaft F ofthe cylinder D, which, as shown in dotted lines, Figs. 1 and 8, has anaxial or needle opening 0, together with communicating inclinedthread-opening d.

G is a longitudinal bar which reciprocates in guides H of the bed-plateA and has an irregular notch I impressed in its top edge, Figs. 1, 3, 6,and 7. J is a cam hung loosely on a pin ein a recess f of the guides H,whose edge is made to conform with and engage the notch I in such mannerthat the reciprocation of the bar G in the direction of the arrow 9 orIt causes the simultaneous rotation of said cam J from the positionshown in Fig. l to that shown in Fig. 3, whereby said bar G is depressedaccordingly, there being a cam in each ora suitable number of guides H.Its depression is horizontal and even.

K, Figs. 1 and 2, is a stud fixed to and projecting from the side of thereciprocating bar G, which has an upwardly-extending arm L, providedwith a hook M for catching and holding the embroidering-thread N infront of the thread-cylinder D on the stopping of the machine and afterit has been severed from its needle 0. The cam J depresses the bar Gwhen it is moved in the direction of the arrow 9 to pass the hook Mbeneath and beyond the embroidering-needle 0, Figs. 2 and 3, and itsthread N from the cylinder or thread shaft F. A spring P extends from afastening or block t', Figs. 2 and 4, on each guide H, containing a camJ. Its loose end j bears or lifts beneath the stud K of the hook M. Onthe return movement of the bar G in the direction of the arrow h thenotched engagement of the cam J rotates it in the opposite direction andrelieves said bar of its cam-depressing influence, which at the sametime leaves the spring P free to act and grador in front of thethread-cylinder D when the machine is stopped.

thread N being passed into the rear end of the axial opening 0 of thethread screwshaft F is directed into the inclined opening d. On theneedle 0 being inserted in the axial opening 0 and rotation imparted tothe thread-shaft F from the shaft E the end or hook of the needleengages with the thread at or about the junction of the openings 0 d andthus is in condition for embroidering the cloth Q, Fig. 11, hung in aframe in front of the stitch-plate S or thread-cylinder D. On thecompletion of the embroidered figure at that part of the cloth themachine is stopped and the hook or device M is moved in front of thethread-cylinder D by its bar G, and it presses and holds said thread Nin front of P, which must be long enough to compensatefor the travel orreciprocation of the rod G, is shown shortened by the removal of thecaps R of the guides H, Figs. 1 and 3, they being used to guide themotions of the bar and cam and keep them from being displaced.

In Figs. 9, 10, 11, 12, and 13 the reciprocat= ing bar has no verticalor lifting motion and another way is shown of catching, holding, andbreaking off the embroidering-thread and disposing of the short orbroken-off end, which is worked into the embroidery so that after it isfinished it doesnot show. This is the result of having the hook actuatedin the back of the stitch-plate S, as both threads have to pass throughthe stitch-plate needlehole. Fig. 13 is a sectioned View of achainstitch. As shown, Figs. 9, 10, 11, 12, and 13, other means can beemployed for holding and breaking the thread as hereinbefore. ThereforeI do not confine myself to the arrange- 1 ment and details illustratedand described The operation is as follows: Embroideringfor accomplishingthe result desired.

I claim- In an embroideringqnachine, the combination of athread-cylinder, a thread-holding device, and means for operating thelatter whereby the thread is clamped between the thread-cylinder and thethread-holding device, an embroidering needle, and means whereby theneedle may be given a rotary motion While the thread is clamped in orderto break the same.

In testimony whereof I affix my signature in presence of two witnesses.

RUDOLF LOEB.

Witnesses:

FRANCIS D. PASTORIUS, B. D. ARCHER.

